Pre-Algebra Examples

Find the GCF 20÷2 , 25
,
Step 1
Find the GCF for the numerators .
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Step 1.1
Find the common factors for the numerical part:
Step 1.2
The factors for are .
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Step 1.2.1
The factors for are all numbers between and , which divide evenly.
Check numbers between and
Step 1.2.2
Find the factor pairs of where .
Step 1.2.3
List the factors for .
Step 1.3
The factors for are .
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Step 1.3.1
The factors for are all numbers between and , which divide evenly.
Check numbers between and
Step 1.3.2
Find the factor pairs of where .
Step 1.3.3
List the factors for .
Step 1.4
List all the factors for to find the common factors.
:
:
Step 1.5
The common factors for are .
Step 1.6
The GCF (HCF) of the numerical factors is .
Step 2
The GCF of a single polynomial is itself.
Step 3
Determine the GCF for .